Abstract The presence of carbon dioxide (CO2) in oilfield produced water, which could be natural or intentionally injected component in oil and gas production, is extremely corrosive to pipelines and tubings. Oilfield produced water is mainly brine solution comprising organic acids, purely condensed water as well as aggressive ions like SO42−, Cl− and dissolved acid gases (like CO2). CO2 induced corrosion in this media is more detrimental than corrosion induced by HCl. This study critically unveiled the CO2 corrosion behavior of steel in oilfield produced water. The subjects covered include the chemistry of CO2 in water, supercritical CO2 condition, computational fluid dynamics (CFD) and corrosion control. Corrosion resistant alloy has been proved to exhibit remarkable corrosion resistance due to formation of strong protective film that can prevent localized corrosion. Moreover, the use of viable surface-active compounds, which are constituents of crude oil is a promising strategy for pipeline steel corrosion mitigation.

中文翻译：

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揭示管道钢在含 CO2 油田采出水中的腐蚀行为：对抗腐蚀诅咒

摘要 油田采出水中的二氧化碳 (CO2) 可能是油气生产中天然或有意注入的成分，对管道和油管具有极强的腐蚀性。油田采出水主要是包含有机酸、纯冷凝水以及腐蚀性离子如 SO42-、Cl- 和溶解的酸性气体（如 CO2）的盐水溶液。这种介质中 CO2 引起的腐蚀比 HCl 引起的腐蚀更有害。这项研究批判性地揭示了钢在油田采出水中的 CO2 腐蚀行为。涵盖的主题包括水中 CO2 的化学、超临界 CO2 条件、计算流体动力学 (CFD) 和腐蚀控制。由于形成了可以防止局部腐蚀的坚固保护膜，耐腐蚀合金已被证明具有显着的耐腐蚀性。此外，使用作为原油成分的可行的表面活性化合物是减轻管线钢腐蚀的有前途的策略。